CN111485140A - Corrosion-resistant aluminum alloy automobile front anti-collision beam and extrusion molding process thereof - Google Patents
Corrosion-resistant aluminum alloy automobile front anti-collision beam and extrusion molding process thereof Download PDFInfo
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- CN111485140A CN111485140A CN202010444167.2A CN202010444167A CN111485140A CN 111485140 A CN111485140 A CN 111485140A CN 202010444167 A CN202010444167 A CN 202010444167A CN 111485140 A CN111485140 A CN 111485140A
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- aluminum alloy
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- collision beam
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/002—Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/003—Cooling or heating of work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C31/00—Control devices, e.g. for regulating the pressing speed or temperature of metal; Measuring devices, e.g. for temperature of metal, combined with or specially adapted for use in connection with extrusion presses
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Extrusion Of Metal (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a corrosion-resistant aluminum alloy automobile front anti-collision beam and an extrusion molding process thereof, wherein the corrosion-resistant aluminum alloy automobile front anti-collision beam comprises the following components in parts by weight: 0.15-0.35 part of Cu, 0.28-0.5 part of Mn, 0.3-0.55 part of Fe, 0.1-0.25 part of Si, 0.05-0.09 part of B, 0.14-0.25 part of Re, 0.3-0.6 part of Mg, 0.05-0.15 part of Zn, 0.06-0.08 part of Ce, 0.04-0.06 part of Nd, 0.05-0.07 part of Tb, 0.03-0.05 part of Sm and the balance of Al. According to the invention, rare earth elements Ce, Nd, Tb and Sm are added, and due to the coordination effect of Ce and Nd, crystal grains can be refined and purified, the compatibility among alloy elements is improved, the uniformity of components and tissues of alloy materials is improved, the corrosion potential is shifted forward, and further the corrosion resistance of the front anti-collision beam of the aluminum alloy automobile is improved.
Description
Technical Field
The invention relates to the technical field of metal extrusion molding, in particular to a corrosion-resistant aluminum alloy automobile front anti-collision beam and an extrusion molding process thereof.
Background
The aluminum alloy is an alloy which is formed by taking aluminum as a matrix element and then adding one or more alloy elements. The aluminum alloy has low density, high strength, excellent mechanical performance, corrosion resistance, machinability and the like, so that the aluminum alloy material is widely applied to the automobile industry.
With the intensive research on the aluminum alloy materials, the existing aluminum alloy materials are more in variety, the performances of various aluminum alloy materials are greatly different, and the existing aluminum alloy materials have further improved spaces in the aspects of conductivity, corrosion resistance, mechanical properties, formability, service life and the like, so that the comprehensive performance of the aluminum alloy materials is better.
Disclosure of Invention
The invention aims to provide a corrosion-resistant aluminum alloy automobile front anti-collision beam and an extrusion molding process thereof aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a corrosion-resistant aluminum alloy automobile front anti-collision beam which comprises the following components in parts by weight: 0.15-0.35 part of Cu, 0.28-0.5 part of Mn, 0.3-0.55 part of Fe, 0.1-0.25 part of Si, 0.05-0.09 part of B, 0.14-0.25 part of Re, 0.3-0.6 part of Mg, 0.05-0.15 part of Zn, 0.06-0.08 part of Ce, 0.04-0.06 part of Nd0.05-0.07 part of Tb, 0.03-0.05 part of Sm and the balance of Al.
Preferably, the mass ratio of Fe to Si is 2.0-3.0: 1.
Preferably, the contents of Ce, Nd and Tb satisfy the following relation, Ce + Nd ═ 2 × Tb.
Preferably, the weight ratio of Cu, Mg and Zn is (0.1-0.2): (0.2-0.6): (0.01-0.3).
The second aspect of the invention provides an extrusion molding process of the aluminum alloy automobile front anti-collision beam, which comprises the following steps:
s1, connecting the extrusion die to the port of the extrusion device through a bolt;
s2, heating the aluminum alloy ingot to 480-500 ℃, and placing the aluminum alloy ingot into an extrusion cylinder of an extruder;
s3, the extrusion device of the extrusion cylinder advances to the extrusion die at the extrusion speed of 2-3m/min to extrude the aluminum alloy cast ingot, and the aluminum alloy cast ingot is extruded from the die hole of the extrusion die to form an aluminum alloy section;
s4, performing online water mist quenching treatment on the aluminum alloy section prepared in the step S3 at the outlet of the extrusion die, wherein the temperature of the aluminum alloy section out of a quenching area is less than or equal to 55 ℃;
s5, stretching and straightening the aluminum alloy section quenched in the step S4;
s6, carrying out artificial aging on the aluminum alloy section straightened by the stretching and straightening in the step S5, wherein the aging temperature is 160-200 ℃, and the aging time is 2-4 hours.
Preferably, the extruder is a 1350T horizontal extruder, the inner diameter of the extrusion cylinder on the 1350T horizontal extruder is 162mm, the extruded bar size of the 1350T horizontal extruder is 160mm by 420mm, and the aluminum material of the 1350T horizontal extruder is A L6061.
Preferably, the material of the extrusion die is one of 4Cr5MoSiV1 steel, 5CrNiMo steel and 3Cr2W8V steel.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
according to the invention, trace elements of Cu, Mn, Fe, Si, B and Re are added on the basis of Al, the content of each added element in the aluminum alloy material is reasonably limited, and the proportional relation of Fe and Si is limited, so that the matching among the performances of the aluminum alloy material is ensured, and the alloy material has better comprehensive performance; adding Cu, Mg and Zn into Al, and reasonably controlling the weight ratio of the Cu, the Mg and the Zn to ensure that the aluminum alloy material has certain hardness; meanwhile, rare earth elements Ce, Nd, Tb and Sm are added, and the coordination effect of Ce and Nd can refine and purify crystal grains, so that the compatibility among alloy elements is improved, the uniformity of components and tissues of alloy materials is improved, the corrosion potential is shifted forward, and the corrosion resistance of the front anti-collision beam of the aluminum alloy automobile is improved; the Tb and Sm act cooperatively to enable precipitated CuAl2The strengthening phase is refined, the width of a grain boundary precipitation-free zone is narrowed, the grain boundary precipitated phase is discontinuously distributed, and the vapor content of the aluminum alloy is further improvedCorrosion resistance of the front anti-collision beam.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention provides a corrosion-resistant aluminum alloy automobile front anti-collision beam which comprises the following components in parts by weight: 0.15-0.35 part of Cu, 0.28-0.5 part of Mn, 0.3-0.55 part of Fe, 0.1-0.25 part of Si, 0.05-0.09 part of B, 0.14-0.25 part of Re, 0.3-0.6 part of Mg, 0.05-0.15 part of Zn, 0.06-0.08 part of Ce, 0.04-0.06 part of Nd, 0.05-0.07 part of Tb, 0.03-0.05 part of Sm and the balance of Al.
As a preferred embodiment, the mass ratio of Fe to Si is 2.0-3.0:1, the contents of Ce, Nd and Tb satisfy the following relation that Ce + Nd ═ 2 × Tb., the weight ratio of Cu, Mg and Zn is (0.1-0.2): (0.2-0.6): (0.01-0.3).
The extrusion forming process of the corrosion-resistant aluminum alloy automobile front anti-collision beam comprises the following steps:
s1, connecting the extrusion die to the port of the extrusion device through a bolt;
s2, heating the aluminum alloy ingot to 480-500 ℃, and placing the aluminum alloy ingot into an extrusion cylinder of an extruder;
s3, the extrusion device of the extrusion cylinder advances to the extrusion die at the extrusion speed of 2-3m/min to extrude the aluminum alloy cast ingot, and the aluminum alloy cast ingot is extruded from the die hole of the extrusion die to form an aluminum alloy section;
s4, performing online water mist quenching treatment on the aluminum alloy section prepared in the step S3 at the outlet of the extrusion die, wherein the temperature of the aluminum alloy section out of a quenching area is less than or equal to 55 ℃;
s5, stretching and straightening the aluminum alloy section quenched in the step S4;
s6, carrying out artificial aging on the aluminum alloy section straightened by the stretching and straightening in the step S5, wherein the aging temperature is 160-200 ℃, and the aging time is 2-4 hours.
As a preferred embodiment, the extruder is a 1350T horizontal extruder, the inner diameter of an extrusion cylinder on the 1350T horizontal extruder is 162mm, the extruded bar size of the 1350T horizontal extruder is 160mm by 420mm, and the 1350T horizontal extruder is made of an aluminum material with the brand number of A L6061.
As a preferred embodiment, the material of the extrusion die is one of 4Cr5MoSiV1 steel, 5CrNiMo steel and 3Cr2W8V steel.
Example 1
The utility model provides a crashproof roof beam before corrosion-resistant aluminum alloy car, crashproof roof beam before aluminum alloy car includes the following weight parts's component: 0.15 part of Cu, 0.28 part of Mn, 0.3 part of Fe, 0.1 part of Si, 0.05 part of B, 0.14 part of Re, 0.3 part of Mg, 0.05 part of Zn, 0.06 part of Ce, 0.04 part of Nd, 0.05 part of Tb, 0.03 part of Sm and the balance of Al.
Example 2
The utility model provides a crashproof roof beam before corrosion-resistant aluminum alloy car, crashproof roof beam before aluminum alloy car includes the following weight parts's component: 0.25 part of Cu, 0.4 part of Mn, 0.45 part of Fe, 0.2 part of Si, 0.08 part of B, 0.2 part of Re, 0.5 part of Mg, 0.1 part of Zn, 0.07 part of Ce, 0.05 part of Nd, 0.06 part of Tb, 0.04 part of Sm and the balance of Al.
Example 3
The utility model provides a crashproof roof beam before corrosion-resistant aluminum alloy car, crashproof roof beam before aluminum alloy car includes the following weight parts's component: 0.35 part of Cu, 0.5 part of Mn, 0.55 part of Fe, 0.25 part of Si, 0.09 part of B, 0.25 part of Re, 0.6 part of Mg, 0.15 part of Zn, 0.08 part of Ce, 0.06 part of Nd, 0.07 part of Tb, 0.05 part of Sm, and the balance of Al.
Application example
The aluminum alloy materials obtained in examples 1 to 3 were subjected to a performance test, and 3004 aluminum alloy was used as a control example to perform a hardness and corrosion resistance test, wherein the corrosion resistance test was performed by preparing the aluminum alloy materials obtained in examples 1 to 3 and the 3004 aluminum alloy material into a sheet of 2mm × 15mm × 100mm, respectively, and then subjecting the sheet to etching at room temperature for 100 hours in a sodium hydroxide solution with a mass fraction of 15 wt% and hydrochloric acid with a mass fraction of 10 wt%, to detect corrosion weight loss of four groups, respectively, and the test results are shown in table 1:
TABLE 1
| Example 1 | Example 2 | Example 3 | 3004 aluminum alloy | |
| hardness/HV | 520 | 525 | 528 | 480 |
| Alkali corrosion resistance/g | 0.00010 | 0.00010 | 0.00010 | 0.00065 |
| Acid corrosion resistance/g | 0.00012 | 0.00011 | 0.00011 | 0.00058 |
As can be seen from the data in Table 1, the corrosion-resistant steel has excellent hardness and corrosion resistance, and compared with the prior art, the corrosion resistance of the steel is better.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. The corrosion-resistant aluminum alloy automobile front anti-collision beam is characterized by comprising the following components in parts by weight: 0.15-0.35 part of Cu, 0.28-0.5 part of Mn, 0.3-0.55 part of Fe, 0.1-0.25 part of Si, 0.05-0.09 part of B, 0.14-0.25 part of Re, 0.3-0.6 part of Mg, 0.05-0.15 part of Zn, 0.06-0.08 part of Ce, 0.04-0.06 part of Nd, 0.05-0.07 part of Tb, 0.03-0.05 part of Sm and the balance of Al.
2. The corrosion-resistant aluminum alloy automobile front impact beam according to claim 1, wherein the mass ratio of Fe to Si is 2.0-3.0: 1.
3. The corrosion-resistant aluminum alloy automobile front anti-collision beam according to claim 1, wherein the contents of Ce, Nd and Tb satisfy the following relation of Ce + Nd 2 × Tb.
4. The corrosion-resistant aluminum alloy automobile front impact beam of claim 1, wherein the weight ratio of Cu, Mg and Zn is (0.1-0.2): (0.2-0.6): (0.01-0.3).
5. The extrusion molding process of the corrosion-resistant aluminum alloy automobile front impact beam according to any one of claims 1 to 4, characterized by comprising the following steps:
s1, connecting the extrusion die to the port of the extrusion device through a bolt;
s2, heating the aluminum alloy ingot to 480-500 ℃, and placing the aluminum alloy ingot into an extrusion cylinder of an extruder;
s3, the extrusion device of the extrusion cylinder advances to the extrusion die at the extrusion speed of 2-3m/min to extrude the aluminum alloy cast ingot, and the aluminum alloy cast ingot is extruded from the die hole of the extrusion die to form an aluminum alloy section;
s4, performing online water mist quenching treatment on the aluminum alloy section prepared in the step S3 at the outlet of the extrusion die, wherein the temperature of the aluminum alloy section out of a quenching area is less than or equal to 55 ℃;
s5, stretching and straightening the aluminum alloy section quenched in the step S4;
s6, carrying out artificial aging on the aluminum alloy section straightened by the stretching and straightening in the step S5, wherein the aging temperature is 160-200 ℃, and the aging time is 2-4 hours.
6. The extrusion molding process of the corrosion-resistant aluminum alloy automobile front anti-collision beam according to claim 5, wherein the type of the extruder is a 1350T horizontal extruder, the inner diameter of an extrusion cylinder used on the 1350T horizontal extruder is 162mm, the extruded bar stock of the 1350T horizontal extruder is 160mm x 420mm, and the 1350T horizontal extruder is made of an aluminum material with the brand number of A L6061.
7. The extrusion molding process of the corrosion-resistant aluminum alloy automobile front anti-collision beam according to claim 5, wherein the material of the extrusion die is one of 4Cr5MoSiV1 steel, 5CrNiMo steel and 3Cr2W8V steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010444167.2A CN111485140A (en) | 2020-05-22 | 2020-05-22 | Corrosion-resistant aluminum alloy automobile front anti-collision beam and extrusion molding process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010444167.2A CN111485140A (en) | 2020-05-22 | 2020-05-22 | Corrosion-resistant aluminum alloy automobile front anti-collision beam and extrusion molding process thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018038A (en) * | 2014-05-20 | 2014-09-03 | 广东豪美铝业股份有限公司 | Aluminium alloy used for automobile anti-collision beam, and manufacturing method for product thereof |
| CN107236881A (en) * | 2017-08-10 | 2017-10-10 | 江苏申阳交通装备有限公司 | A kind of high-performance and low-cost automobile buffer beam aluminium alloy and its preparation technology |
| CN108660343A (en) * | 2018-06-05 | 2018-10-16 | 成都阳光铝制品有限公司 | A kind of high tough aluminum alloy materials of automobile specified and manufacturing process |
| CN110157961A (en) * | 2019-06-13 | 2019-08-23 | 江苏银奕达科技股份有限公司 | A kind of high-strength automotive anti-collision beam profile production technology |
| CN111069323A (en) * | 2019-12-25 | 2020-04-28 | 辽宁忠旺集团有限公司 | Extrusion production process of automobile doorsill beam profile |
-
2020
- 2020-05-22 CN CN202010444167.2A patent/CN111485140A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018038A (en) * | 2014-05-20 | 2014-09-03 | 广东豪美铝业股份有限公司 | Aluminium alloy used for automobile anti-collision beam, and manufacturing method for product thereof |
| CN107236881A (en) * | 2017-08-10 | 2017-10-10 | 江苏申阳交通装备有限公司 | A kind of high-performance and low-cost automobile buffer beam aluminium alloy and its preparation technology |
| CN108660343A (en) * | 2018-06-05 | 2018-10-16 | 成都阳光铝制品有限公司 | A kind of high tough aluminum alloy materials of automobile specified and manufacturing process |
| CN110157961A (en) * | 2019-06-13 | 2019-08-23 | 江苏银奕达科技股份有限公司 | A kind of high-strength automotive anti-collision beam profile production technology |
| CN111069323A (en) * | 2019-12-25 | 2020-04-28 | 辽宁忠旺集团有限公司 | Extrusion production process of automobile doorsill beam profile |
Non-Patent Citations (1)
| Title |
|---|
| 王立军: "《航空工程材料与成形工艺基础》", 31 July 2015 * |
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